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28477 is a prime number
BaseRepresentation
bin110111100111101
31110001201
412330331
51402402
6335501
7146011
oct67475
943051
1028477
111a439
1214591
13cc67
14a541
158687
hex6f3d

28477 has 2 divisors, whose sum is σ = 28478. Its totient is φ = 28476.

The previous prime is 28463. The next prime is 28493. The reversal of 28477 is 77482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23716 + 4761 = 154^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 28477 - 27 = 28349 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14238 + 14239.

It is an arithmetic number, because the mean of its divisors is an integer number (14239).

228477 is an apocalyptic number.

It is an amenable number.

28477 is a deficient number, since it is larger than the sum of its proper divisors (1).

28477 is an equidigital number, since it uses as much as digits as its factorization.

28477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 28.

The square root of 28477 is about 168.7512962913. The cubic root of 28477 is about 30.5373545721.

Adding to 28477 its product of digits (3136), we get a palindrome (31613).

It can be divided in two parts, 284 and 77, that added together give a square (361 = 192).

The spelling of 28477 in words is "twenty-eight thousand, four hundred seventy-seven".